Message of the General President-Director Dear exhibitors, here Us are with go of a year Living room which succeeded, by year, to confirm its vocation and to show its capacity to answer waitings and the concerns of the professionals. The international Living room of Public works (SITP) could only know this fortune in an economic context very dynamic and particularly favorable to the sector of public works. For its 5e edition, the SITP records a significant number of participants and a great diversity of branches of activities, with an unceasingly ascending curve since its creation. A progression which reflects the great interest that carry, today more than ever, the Algerian and foreign economic operators at the national market strongly instigated by the great structuring projects launched by our country and which fit in very engaging five-year program 2005-2009. In this spirit of the great economic challenges, the 5e SiTP will have vocation to reflect all the dimension of a sector as Public works while offering to all the operators who measure the importance of it, of the appropriatenesses of businesses, partnership and investments in the field of the realization of the infrastructures road, maritime, airport and other structures and urban. Placed under the topic "Public works and durable development", this demonstration will be indeed a space of experience sharing around this question through the technical days which will take place in margin of the living room, and also a space which will make discover with the ones and the others the technological innovations, the new techniques of construction, etc. For its part, Safex, convinced of the role of engine that the sector of public works plays in the national development of the economy and the improvement of the quality of life of the Algerians, was spread consequently so that all the conditions of reception and organization are met so that this 5e edition of SiTP is a success for all the participants. Welcome with all and good luck! Rachid Gasmi Chairman Safex